US11740551B2 - Method for producing substrate - Google Patents
Method for producing substrate Download PDFInfo
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- US11740551B2 US11740551B2 US16/764,685 US201816764685A US11740551B2 US 11740551 B2 US11740551 B2 US 11740551B2 US 201816764685 A US201816764685 A US 201816764685A US 11740551 B2 US11740551 B2 US 11740551B2
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- beads
- photosensitive resin
- layer
- resin composition
- substrate
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/60—Substrates
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/0009—Materials therefor
- G02F1/0063—Optical properties, e.g. absorption, reflection or birefringence
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13392—Gaskets; Spacers; Sealing of cells spacers dispersed on the cell substrate, e.g. spherical particles, microfibres
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
- G03F7/0007—Filters, e.g. additive colour filters; Components for display devices
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0047—Photosensitive materials characterised by additives for obtaining a metallic or ceramic pattern, e.g. by firing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2004—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2014—Contact or film exposure of light sensitive plates such as lithographic plates or circuit boards, e.g. in a vacuum frame
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13398—Spacer materials; Spacer properties
Definitions
- the present application relates to a method for producing a substrate.
- Patent Document 1 has disclosed a so-called GH cell (guest host cell) applying a mixture of a liquid crystal host and a dichroic dye guest.
- GH cell guest host cell
- spacers are located between the above-described two substrates to maintain the spacing between the substrates.
- the spacer As the spacer, a so-called ball (or bead) spacer and a column spacer have been typically used.
- the column spacer is a form fixed on a substrate, which has been generally formed by exposing and developing a photosensitive resin.
- the spacer ( 40 ) is formed on the substrate base layer ( 10 ) by a method of irradiating it with light (arrow) via a mask ( 30 ) and then removing exposed portions or unexposed portions.
- Patent Document 1 European Patent Publication No. 0022311
- the present application relates to a method for producing a substrate, for example, a substrate comprising spacers.
- the method for producing a substrate of the present application comprises a step of exposing and developing a photosensitive resin composition layer formed on a surface of a substrate base layer to produce spacers.
- a layer of a photosensitive resin composition comprising a photosensitive resin and beads is used as the photosensitive resin composition layer in the above exposure and development process.
- the photosensitive resin composition layer ( 50 ) on the substrate base layer ( 10 ) to be exposed via a mask ( 30 ) may comprise beads ( 501 ) together with the photosensitive resin.
- the size (height) of the spacer can be freely controlled according to a desired cell gap, and even if the spacers having a high height are produced, the spacers may also be produced to have a uniform height.
- the beads present in the photosensitive resin layer may be removed in the developing process following the exposing process, or may remain in the spacers.
- the substrate base layer for example, any base layer used in a substrate in a configuration of a known optical device such as an LCD (liquid crystal display) can be applied without particular limitation.
- the substrate base layer may be an inorganic base layer or an organic base layer.
- the inorganic base layer a glass base layer or the like can be exemplified, and as the organic base layer, various plastic films or the like can be exemplified.
- the plastic film can be exemplified by a TAC (triacetyl cellulose) film; a COP (cycloolefin copolymer) film such as a norbornene derivative; an acrylic film such as PMMA (poly(methyl methacrylate); a PC (polycarbonate) film; a polyolefin film such as PE (polyethylene) or PP (polypropylene); a PVA (polyvinyl alcohol) film; a DAC (diacetyl cellulose) film; a Pac (polyacrylate) film; a PES (polyether sulfone) film; a PEEK (polyetheretherketone) film; a PPS (polyphenylsulfone) film, a PEI (polyetherimide) film; a PEN (polyethylene naphthatate) film; a PET (polyethyleneterephtalate) film; a PI (polyimide) film; a
- the thickness of the base layer is also not particularly limited, where an appropriate range may be selected depending on applications.
- the applied substrate base layer may also be formed on the applied substrate base layer, in addition to the photosensitive resin composition layer.
- These elements are variously known, and typically, there is an electrode layer or a light shielding layer, and the like.
- the electrode layer or the light shielding layer may be formed, for example, between the base layer and the photosensitive resin composition layer.
- the electrode layer a known material can be applied.
- the electrode layer may comprise a metal alloy, an electrically conductive compound or a mixture of two or more thereof.
- Such a material can be exemplified by a metal such as gold, CuI, an oxide material such as ITO (indium tin oxide), IZO (indium zinc oxide), ZTO (zinc tin oxide), zinc oxide doped with aluminum or indium, magnesium indium oxide, nickel tungsten oxide, ZnO, SnO 2 or In 2 O 3 , a metal nitride such as gallium nitride, a metal selenide such as zinc selenide, a metal sulfide such as zinc sulfide, or the like.
- a transparent positive hole injecting electrode layer can also be formed by using a laminate of a metal thin film of Au, Ag or Cu, and the like, and a transparent material having high refractive index such as ZnS, TiO 2 or ITO.
- the electrode layer may be formed by any means such as vapor deposition, sputtering, chemical vapor deposition or electrochemical means. Patterning of the electrode layer is also possible in a known manner without any particular limitation, and the electrode layer may be patterned, for example, through known photolithography or a process using a shadow mask or the like.
- the layer may be exemplified by a metal layer, a metal oxide layer, a metal nitride layer or a metal oxynitride layer, which is generally applied, or a layer containing an organic pigment and/or an inorganic pigment, and the like.
- the method of forming a photosensitive resin composition layer on such a substrate base layer is not particularly limited.
- the photosensitive resin composition layer can be formed by coating a coating liquid formed by blending known additives in a photosensitive resin, if necessary, on a substrate base layer to an appropriate thickness, as performed in a general column spacer manufacturing process, but using a coating liquid containing beads in the coating liquid.
- the kind of the applicable photosensitive resin is not particularly limited, where a known photosensitive resin may be used.
- a material of a type that is cured by irradiation with light such as ultraviolet rays is used, and as an example thereof, an epoxy resin, an acrylic resin, an oxetane resin or a thiol-ene resin (resin using thiol-ene reaction of a thiol and a vinylic compound), and the like are known, but the kinds of materials that can be applied in the present application are not limited thereto.
- the range of the term photosensitive resin may include monomer or oligomer components that can be cured or crosslinked by light irradiation or the like to become a resin component, as well as components themselves in resin form.
- the ratio of the photosensitive resin in the photosensitive resin composition layer is not particularly limited.
- the ratio of the photosensitive resin in the photosensitive resin composition may be about 50 wt % or more, 55 wt % or more, 60 wt % or more, 65 wt % or more, 70 wt % or more, 75 wt % or more, 80 wt % or more, 85 wt % or more, or 90 wt % or more or so.
- the upper limit of the ratio is not particularly limited, and for example, the ratio of the photosensitive resin may be less than about 100 wt %, 95 wt % or less, or 90 wt % or less or so.
- Beads are contained in the photosensitive resin composition layer together with the photosensitive resin. By applying the beads, spacers having a uniform height can be easily manufactured depending on the desired height.
- the shape of the beads to be contained is not particularly limited. That is, as long as the height of the photosensitive resin composition layer or the spacers can be uniformly maintained during the exposure and development process and the like depending on to the purpose of the present application, all the beads having various shapes can be applied.
- the bead may have a spherical shape, a columnar shape, a polygonal shape or an amorphous shape, where in the case of the columnar shape, a cylinder shape, an elliptic cylinder shape, or a polygonal column shape such as a square column shape, and the like can also be used.
- the size of the beads can be determined by the height of the spacer according to the desired cell gap.
- the beads may have a size in a range of about 1 ⁇ m to 50 ⁇ m.
- the size may be the particle diameter when the bead is a spherical shape, the height when the bead is a columnar shape and the largest or smallest size when the bead is a polygonal shape or other shapes.
- the size of the beads may be 2 ⁇ m or more, 2.5 ⁇ m or more, 3 ⁇ m or more, 3.5 ⁇ m or more, 4 ⁇ m or more, 4.5 ⁇ m or more, 5 ⁇ m or more, 5.5 ⁇ m or more, 6 ⁇ m or more, 6.5 ⁇ m or more, 7 ⁇ m or more, 7.5 ⁇ m or more, 8 ⁇ m or more, 8.5 ⁇ m or more, 9 ⁇ m or more, 9.5 ⁇ m or more, or 10 ⁇ m or more, or may be 45 ⁇ m or less, 40 ⁇ m or less, 35 ⁇ m or less, 30 ⁇ m or less, 25 ⁇ m or less, 20 ⁇ m or less, or 15 ⁇ m or less, but this size may be changed depending on the purpose.
- the beads to be added to the photosensitive resin composition layer may be required to have a uniform size distribution from the viewpoint of forming spacers having a uniform height.
- the material of the beads applied in the present application is not particularly limited, and known organic or inorganic beads can be used.
- beads of polymeric materials such as acrylic beads, silicone beads, urethane beads, polystyrene beads or epoxy beads, or inorganic beads such as silica beads, talc beads or zeolite beads can be used.
- the photosensitive resin composition layer may comprise 0.01 to 10 parts by weight of beads relative to 100 parts by weight of the photosensitive resin.
- the ratio of the beads added can be changed depending on the purpose, which can be adjusted in consideration of, for example, the height uniformity according to the desired height of the spacers, and the like.
- the photosensitive resin composition layer may comprise other known components in addition to the photosensitive resin and the beads.
- the components that may be contained include, for example, crosslinking agents, initiators, pigments, surfactants, leveling agents, and the like, but are not limited thereto.
- the pigment may be included, for example, when formation of black spacers is required depending on the purpose.
- the thickness of such a photosensitive resin composition layer is not particularly limited, which may be adjusted depending on the purpose.
- the thickness of the composition layer may be in a range of about 1 ⁇ m to 50 ⁇ m.
- the thickness may be 2 ⁇ m or more, 2.5 ⁇ m or more, 3 ⁇ m or more, 3.5 ⁇ m or more, 4 ⁇ m or more, 4.5 ⁇ m or more, 5 ⁇ m or more, 5.5 ⁇ m or more, 6 ⁇ m or more, 6.5 ⁇ m or more, 7 ⁇ m or more, 7.5 ⁇ m or more, 8 ⁇ m or more, 8.5 ⁇ m or more, 9 ⁇ m or more, 9.5 ⁇ m or more, or 10 ⁇ m or more, or may be 45 ⁇ m or less, 40 ⁇ m or less, 35 ⁇ m or less, 30 ⁇ m or less, 25 ⁇ m or less, 20 ⁇ m or less, or 15 ⁇ m or less, but this size may be changed depending on the purpose.
- the production method of the present application comprises a process of exposing a photosensitive resin composition layer containing such components.
- the exposure process is not particularly limited and may be performed according to a known method, for example, a method of exposing it by irradiating it with ultraviolet rays.
- the exposure step may be performed by irradiating the photosensitive resin composition layer ( 50 ) with light via a mask ( 30 ).
- the type and pattern of the mask applied in this process there is no particular limitation on the type and pattern of the mask applied in this process, and a well-known mask used for manufacturing the column spacer can be used, and the pattern can also be determined according to the desired pattern of the spacer.
- the mask ( 30 ) is irradiated with light at a position where it is separated by a certain distance from the photosensitive resin composition layer ( 50 ), but in some cases, the exposure process may also be performed in a state where the mask is in contact with the photosensitive resin composition layer.
- the intensity or wavelength of the light to be exposed is not particularly limited, which can be controlled depending on to the type of the applied photosensitive resin.
- the developing process may be performed after the exposure process.
- the developing process is a process of selectively removing the exposed region or the unexposed region of the photosensitive resin composition layer.
- the spacers thus formed may also comprise the photosensitive resin, and may also further comprise the beads in the photosensitive resin.
- This developing process can be performed according to a known method, and for example, can be performed by treating the substrate with a suitable developer depending on the type of the photosensitive resin used.
- the method for producing a substrate of the present application may further comprise a step of forming an alignment film on the substrate base layer comprising the formed spacers.
- the kind of the alignment film to be formed and the forming method thereof are not particularly limited, and a known alignment film, for example, a known rubbing alignment film or photo alignment film, may be formed in a known manner. That is, a method of forming the alignment film on the base layer and the spacers and performing the orientation treatment thereon also follows a known method.
- the production of such a substrate may be performed by a roll-to-roll method.
- the formation of the photosensitive resin composition layer, the exposure and development process, and the like can be performed while releasing and moving the substrate base layer wound on a roll such as a winding roll.
- the substrate base layer can be wound on the winding roll, where the movement path of the base layer can be controlled by a guide roll or the like.
- the method for carrying out the roll-to-roll process is not particularly limited, which can be performed according to a known method.
- the present application also relates to an optical device formed using such a substrate.
- An exemplary optical device of the present application may comprise the substrate and a second substrate disposed opposite to the substrate and maintaining a gap with the substrate by the spacer in the substrate.
- a light modulation layer may be present in a gap between two substrates.
- the term light modulation layer may include all known types of layers capable of changing at least one characteristic among characteristics such as polarization states, transmittance, color tones and reflectance of incident light depending on purposes.
- the light modulation layer is a layer comprising a liquid crystal material, which may be a liquid crystal layer switched between a diffusion mode and a transparent mode by on-off of a voltage, for example, a vertical electric field or a horizontal electric field, a liquid crystal layer switched between a transparent mode and a blocking mode, a liquid crystal layer switched between a transparent mode and a color mode, or a liquid crystal layer switched between color modes of different colors.
- a liquid crystal material which may be a liquid crystal layer switched between a diffusion mode and a transparent mode by on-off of a voltage, for example, a vertical electric field or a horizontal electric field, a liquid crystal layer switched between a transparent mode and a blocking mode, a liquid crystal layer switched between a transparent mode and a color mode, or a liquid crystal layer switched between color modes of different colors.
- the light modulation layers capable of performing the actions as above, for example, liquid crystal layers are variously known.
- a liquid crystal layer used in a typical liquid crystal display can be used.
- the light modulation layer may also be various types of so-called guest host liquid crystal layers, polymer dispersed liquid crystal layers, pixel-isolated liquid crystal layers, suspended particle devices or electrochromic devices, and the like.
- the polymer dispersed liquid crystal layer is a superordinate concept including a PILC (pixel isolated liquid crystal), a PDLC (polymer dispersed liquid crystal), a PNLC (polymer network liquid crystal) or a PSLC (polymer stabilized liquid crystal), and the like.
- the polymer dispersed liquid crystal layer (PDLC) may comprise, for example, a liquid crystal region containing a polymer network and a liquid crystal compound dispersed in a state of being phase-separated from the polymer network.
- the implementation manner or form of the light modulation layer is not particularly limited, and any known method may be employed without any limitation depending on purposes.
- the optical device may further comprise additional known functional layers, such as a polarizing layer, a hard coating layer and/or an antireflection layer, if necessary.
- additional known functional layers such as a polarizing layer, a hard coating layer and/or an antireflection layer, if necessary.
- the method for producing a substrate of the present application can uniformly form spacers having a height according to a desired cell gap and can also freely control the height of the spacers.
- FIG. 1 is a diagram showing a known spacer production method.
- FIG. 2 is a diagram showing an exemplary method for producing spacers of the present application.
- FIG. 3 is a photograph of the spacers formed in an example.
- FIG. 4 is a diagram showing points where the height of the spacers formed in an example is measured.
- a crystalline ITO (indium tin oxide) electrode layer was formed on a square PET (polyethylene terephthalate) base layer ( 10 in FIG. 2 ) having a diagonal length of 55 inches as a substrate base layer, and spacers were formed thereon.
- the spacers were formed by using, as a photosensitive resin composition, a photosensitive resin composition obtained by mixing organic beads (spherical acrylic beads as a mixture of polystyrene and polymethyl methacrylate) having a size (particle diameter) of about 10 ⁇ m or so with a mixture (UV resin) of a conventional UV-curing acrylate series binder (mixture comprising a trimethylolpropane tricarylate monomer and an isobornyl acrylate monomer as main components) and initiator (a mixture of Darocur TPO and Darocur 1173 from Ciba Co., Ltd.) in a ratio of about 2 parts by weight relative to 100 parts by weight of the UV resin.
- organic beads spherical acrylic beads as a mixture of polystyrene and polymethyl methacrylate
- UV resin mixture comprising a trimethylolpropane tricarylate monomer and an isobornyl acrylate monomer as main components
- initiator a mixture of Daro
- the composition was coated on the ITO electrode layer of the PET base layer to a thickness of approximately 10 ⁇ m or so, and the composition was cured by irradiating it with ultraviolet rays in a state where a light shielding pattern mask was in contact with the composition layer. Thereafter, the uncured photosensitive resin composition layer was removed (developed) using IPA (isopropyl alcohol) to form spacers.
- FIG. 3 is a photograph of the spacers thus formed. Among the spacers thus formed, the heights of the spacers formed at the points (L 1 to L 3 , C 1 to C 3 and R 1 to R 3 ) as shown in FIG. 4 were measured.
- the heights were measured using a 3D Laser Scanning Microscope (Keyence, VK-X210, ⁇ 1,000 magnification) and shown in Table 1 below.
- the respective points shown in FIG. 4 are three points selected from the middle, right side and left side, respectively at approximately equal intervals on the surface of the PET base layer.
- the spacers were prepared in the same manner as in Example 1, except that a photosensitive resin composition not containing beads was used, and the size at each point was measured and shown in Table 1 below.
Abstract
Description
TABLE 1 | |||
Comparative Example (height unit: | |||
Example (height unit: μm) | μm) |
L point | C point | R point | L point | C point | R point | ||
1 | 9.7 | 9.8 | 9.7 | 8.0 | 7.6 | 7.4 |
2 | 9.8 | 9.7 | 9.7 | 8.0 | 8.6 | 8.3 |
3 | 9.9 | 9.8 | 9.8 | 6.9 | 7.3 | 7.3 |
-
- 10: substrate base layer
- 20, 50: photosensitive resin composition layer
- 30: mask
- 40: spacer
- 501: bead
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PCT/KR2018/014542 WO2019103533A1 (en) | 2017-11-24 | 2018-11-23 | Method for manufacturing substrate |
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Citations (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0022311A1 (en) | 1979-06-15 | 1981-01-14 | Stanley Electric Co., Ltd. | Multilayer liquid crystal device |
JPS58160927A (en) * | 1982-03-19 | 1983-09-24 | Seikosha Co Ltd | Display panel and its production |
JPH05205640A (en) | 1992-01-30 | 1993-08-13 | Futaba Corp | Method for forming envelope support |
US5583675A (en) * | 1993-04-27 | 1996-12-10 | Sharp Kabushiki Kaisha | Liquid crystal display device and a method for producing the same |
JP2923031B2 (en) | 1990-10-25 | 1999-07-26 | 日本写真印刷株式会社 | Transparent touch panel and manufacturing method thereof |
JP2000171804A (en) | 1998-12-05 | 2000-06-23 | Dainippon Printing Co Ltd | Liquid crystal display device and its manufacture |
JP2000214470A (en) * | 1999-01-26 | 2000-08-04 | Sharp Corp | Dry film resist and production of liquid crystal display device |
US6133972A (en) * | 1996-03-26 | 2000-10-17 | Sharp Kabushiki Kaisha | Liquid crystal display device and method for producing the same |
JP2001005006A (en) | 1999-06-17 | 2001-01-12 | Nec Corp | Liquid crystal display panel and its production |
US6208402B1 (en) * | 1997-09-17 | 2001-03-27 | Citizen Watch Co., Ltd. | Antiferroelectric liquid crystal panel |
JP2001083524A (en) | 1999-09-09 | 2001-03-30 | Canon Inc | Color filter with spacer, its production, spacer forming material containing bead to be used for that production method, and liquid crystal device using that color filter |
US6221543B1 (en) * | 1999-05-14 | 2001-04-24 | 3M Innovatives Properties | Process for making active substrates for color displays |
JP2001226449A (en) * | 1999-12-10 | 2001-08-21 | Nippon Shokubai Co Ltd | Photosensitive resin and photosensitive resin composition for liquid crystal spacer |
US20020060771A1 (en) | 2000-09-29 | 2002-05-23 | Tomonobu Sumino | Photosensitive resin composition and liquid crystal display color filter |
JP2002179993A (en) | 2000-12-14 | 2002-06-26 | Nippon Steel Chem Co Ltd | Composition for color filter protection film and production method for color filter |
US6433852B1 (en) * | 1998-12-03 | 2002-08-13 | Hitachi, Ltd. | Liquid crystal display device having a spacer |
US20020114169A1 (en) * | 2001-02-22 | 2002-08-22 | Kenichi Harada | Light diffusion sheet and backlight unit using the same |
US6501527B1 (en) * | 1999-07-29 | 2002-12-31 | Canon Kabushiki Kaisha | Liquid crystal elemental device, production process thereof and spacer-bearing substrate |
US20030094691A1 (en) * | 1999-12-17 | 2003-05-22 | Mark Auch | Encapsulation of electronic devices |
US20030152849A1 (en) * | 2001-02-15 | 2003-08-14 | Mary Chan-Park | Process for roll-to-roll manufacture of a display by synchronized photolithographic exposure on a substrate web |
US20050074653A1 (en) * | 2001-06-28 | 2005-04-07 | Squirrel Holdings Ltd. | Redox cell with non-selective permionic separator |
JP2005140993A (en) | 2003-11-06 | 2005-06-02 | Sekisui Chem Co Ltd | Photocurable resin composition, columnar spacer, particle spacer fixing agent and liquid crystal display element |
JP2005250179A (en) * | 2004-03-04 | 2005-09-15 | Sekisui Chem Co Ltd | Photosetting resin composition for black matrix, method for manufacturing substrate for liquid crystal display panel, black matrix, and liquid crystal display panel |
JP2005258137A (en) * | 2004-03-12 | 2005-09-22 | Hitachi Ltd | Liquid crystal display panel and its manufacturing method |
JP2006154593A (en) | 2004-12-01 | 2006-06-15 | Toppan Printing Co Ltd | Substrate for liquid crystal display device and its manufacturing method |
JP2007148005A (en) | 2005-11-28 | 2007-06-14 | Dainippon Printing Co Ltd | Substrate for display device with spacer |
WO2009116258A1 (en) | 2008-03-18 | 2009-09-24 | 住友ベークライト株式会社 | Photosensitive resin composition, film for photosensitive resin spacer, and semiconductor device |
JP2010145756A (en) | 2008-12-18 | 2010-07-01 | Casio Computer Co Ltd | Liquid crystal display element and manufacturing method thereof |
JP2011170075A (en) | 2010-02-18 | 2011-09-01 | Tokyo Ohka Kogyo Co Ltd | Photosensitive composition |
US20120274004A1 (en) * | 2010-01-12 | 2012-11-01 | Rolith, Inc. | Nanopatterning method and apparatus |
US20120282554A1 (en) * | 2008-01-22 | 2012-11-08 | Rolith, Inc. | Large area nanopatterning method and apparatus |
US20130089734A1 (en) * | 2010-06-15 | 2013-04-11 | Daicel Value Coating Ltd. | Lamination film and process for producing the same, as well as electronic device |
JP2014038345A (en) | 2013-09-20 | 2014-02-27 | Nippon Steel & Sumikin Chemical Co Ltd | Photosensitive resin composition and cured film |
US20150064628A1 (en) * | 2012-04-17 | 2015-03-05 | The Regents Of The University Of Michigan | Methods for making micro- and nano-scale conductive grids for transparent electrodes and polarizers by roll to roll optical lithography |
US20150260907A1 (en) * | 2013-02-20 | 2015-09-17 | Lg Chem, Ltd. | Display device |
KR20160063125A (en) | 2014-11-26 | 2016-06-03 | 엘지디스플레이 주식회사 | High stiffness of column spacer and liquid crystal display device having thereof |
US20170199411A1 (en) * | 2016-01-11 | 2017-07-13 | Samsung Display Co., Ltd. | Display device and manufacturing method the same |
US20180329286A1 (en) * | 2016-01-27 | 2018-11-15 | Lg Chem, Ltd. | Film mask, method for manufacturing same, and method for forming pattern using film mask |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003105207A (en) * | 2001-09-28 | 2003-04-09 | Chisso Corp | Resin composition and display device using the same |
TWI312882B (en) * | 2003-03-24 | 2009-08-01 | Dainippon Printing Co Ltd | Curable resin composition, curable resin composition for photo-process patterning, color filter, substrate for liquid crystal panel and liquid crystal panel |
KR20080107607A (en) * | 2007-06-07 | 2008-12-11 | 삼성코닝 주식회사 | Large sized surface light source and backlight unit having the same |
JP5205640B2 (en) | 2008-06-04 | 2013-06-05 | コスモ石油株式会社 | Method for producing fuel oil composition for diesel engine |
JP2015007704A (en) * | 2013-06-25 | 2015-01-15 | 凸版印刷株式会社 | Color filter and manufacturing method thereof |
-
2018
- 2018-11-23 CN CN201880073200.6A patent/CN111344635A/en active Pending
- 2018-11-23 WO PCT/KR2018/014542 patent/WO2019103533A1/en active Application Filing
- 2018-11-23 KR KR1020180146542A patent/KR102146539B1/en active IP Right Grant
- 2018-11-23 TW TW110138891A patent/TWI810685B/en active
- 2018-11-23 TW TW107141840A patent/TWI754116B/en active
- 2018-11-23 JP JP2020526227A patent/JP7248213B2/en active Active
- 2018-11-23 US US16/764,685 patent/US11740551B2/en active Active
Patent Citations (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0022311A1 (en) | 1979-06-15 | 1981-01-14 | Stanley Electric Co., Ltd. | Multilayer liquid crystal device |
JPS58160927A (en) * | 1982-03-19 | 1983-09-24 | Seikosha Co Ltd | Display panel and its production |
JP2923031B2 (en) | 1990-10-25 | 1999-07-26 | 日本写真印刷株式会社 | Transparent touch panel and manufacturing method thereof |
JPH05205640A (en) | 1992-01-30 | 1993-08-13 | Futaba Corp | Method for forming envelope support |
US5385499A (en) | 1992-01-30 | 1995-01-31 | Futaba Denshi Kogyo K.K. | Envelope for display device and method for manufacturing same |
US5583675A (en) * | 1993-04-27 | 1996-12-10 | Sharp Kabushiki Kaisha | Liquid crystal display device and a method for producing the same |
US6133972A (en) * | 1996-03-26 | 2000-10-17 | Sharp Kabushiki Kaisha | Liquid crystal display device and method for producing the same |
US6208402B1 (en) * | 1997-09-17 | 2001-03-27 | Citizen Watch Co., Ltd. | Antiferroelectric liquid crystal panel |
US6433852B1 (en) * | 1998-12-03 | 2002-08-13 | Hitachi, Ltd. | Liquid crystal display device having a spacer |
JP2000171804A (en) | 1998-12-05 | 2000-06-23 | Dainippon Printing Co Ltd | Liquid crystal display device and its manufacture |
US6299949B1 (en) | 1998-12-05 | 2001-10-09 | Dai Nippon Printing Co., Ltd. | Liquid crystal display devices and processes for producing the same |
JP2000214470A (en) * | 1999-01-26 | 2000-08-04 | Sharp Corp | Dry film resist and production of liquid crystal display device |
US6221543B1 (en) * | 1999-05-14 | 2001-04-24 | 3M Innovatives Properties | Process for making active substrates for color displays |
JP2001005006A (en) | 1999-06-17 | 2001-01-12 | Nec Corp | Liquid crystal display panel and its production |
US6870592B1 (en) | 1999-06-17 | 2005-03-22 | Nec Lcd Technologies, Ltd. | Liquid-crystal display panel with spacer in pixel electrode contact hole and method for manufacturing same |
US6501527B1 (en) * | 1999-07-29 | 2002-12-31 | Canon Kabushiki Kaisha | Liquid crystal elemental device, production process thereof and spacer-bearing substrate |
JP2001083524A (en) | 1999-09-09 | 2001-03-30 | Canon Inc | Color filter with spacer, its production, spacer forming material containing bead to be used for that production method, and liquid crystal device using that color filter |
JP2001226449A (en) * | 1999-12-10 | 2001-08-21 | Nippon Shokubai Co Ltd | Photosensitive resin and photosensitive resin composition for liquid crystal spacer |
US20030094691A1 (en) * | 1999-12-17 | 2003-05-22 | Mark Auch | Encapsulation of electronic devices |
US20020060771A1 (en) | 2000-09-29 | 2002-05-23 | Tomonobu Sumino | Photosensitive resin composition and liquid crystal display color filter |
JP2002179993A (en) | 2000-12-14 | 2002-06-26 | Nippon Steel Chem Co Ltd | Composition for color filter protection film and production method for color filter |
US20030152849A1 (en) * | 2001-02-15 | 2003-08-14 | Mary Chan-Park | Process for roll-to-roll manufacture of a display by synchronized photolithographic exposure on a substrate web |
US20020114169A1 (en) * | 2001-02-22 | 2002-08-22 | Kenichi Harada | Light diffusion sheet and backlight unit using the same |
US20050074653A1 (en) * | 2001-06-28 | 2005-04-07 | Squirrel Holdings Ltd. | Redox cell with non-selective permionic separator |
JP2005140993A (en) | 2003-11-06 | 2005-06-02 | Sekisui Chem Co Ltd | Photocurable resin composition, columnar spacer, particle spacer fixing agent and liquid crystal display element |
JP2005250179A (en) * | 2004-03-04 | 2005-09-15 | Sekisui Chem Co Ltd | Photosetting resin composition for black matrix, method for manufacturing substrate for liquid crystal display panel, black matrix, and liquid crystal display panel |
JP2005258137A (en) * | 2004-03-12 | 2005-09-22 | Hitachi Ltd | Liquid crystal display panel and its manufacturing method |
JP2006154593A (en) | 2004-12-01 | 2006-06-15 | Toppan Printing Co Ltd | Substrate for liquid crystal display device and its manufacturing method |
JP2007148005A (en) | 2005-11-28 | 2007-06-14 | Dainippon Printing Co Ltd | Substrate for display device with spacer |
US20120282554A1 (en) * | 2008-01-22 | 2012-11-08 | Rolith, Inc. | Large area nanopatterning method and apparatus |
WO2009116258A1 (en) | 2008-03-18 | 2009-09-24 | 住友ベークライト株式会社 | Photosensitive resin composition, film for photosensitive resin spacer, and semiconductor device |
KR20100124805A (en) | 2008-03-18 | 2010-11-29 | 스미토모 베이클리트 컴퍼니 리미티드 | Photosensitive resin composition, film for photosensitive resin spacer, and semiconductor device |
US20110008611A1 (en) * | 2008-03-18 | 2011-01-13 | Sumitomo Bakelite Co., Ltd. | Photosensitive resin composition, film for photosensitive resin spacer, and semiconductor device |
EP2273314B1 (en) | 2008-03-18 | 2012-07-25 | Sumitomo Bakelite Company Limited | Photosensitive resin composition, film for photosensitive resin spacer, and semiconductor device |
JP2010145756A (en) | 2008-12-18 | 2010-07-01 | Casio Computer Co Ltd | Liquid crystal display element and manufacturing method thereof |
US20120274004A1 (en) * | 2010-01-12 | 2012-11-01 | Rolith, Inc. | Nanopatterning method and apparatus |
JP2011170075A (en) | 2010-02-18 | 2011-09-01 | Tokyo Ohka Kogyo Co Ltd | Photosensitive composition |
US20130089734A1 (en) * | 2010-06-15 | 2013-04-11 | Daicel Value Coating Ltd. | Lamination film and process for producing the same, as well as electronic device |
US20150064628A1 (en) * | 2012-04-17 | 2015-03-05 | The Regents Of The University Of Michigan | Methods for making micro- and nano-scale conductive grids for transparent electrodes and polarizers by roll to roll optical lithography |
US20150260907A1 (en) * | 2013-02-20 | 2015-09-17 | Lg Chem, Ltd. | Display device |
JP2014038345A (en) | 2013-09-20 | 2014-02-27 | Nippon Steel & Sumikin Chemical Co Ltd | Photosensitive resin composition and cured film |
KR20160063125A (en) | 2014-11-26 | 2016-06-03 | 엘지디스플레이 주식회사 | High stiffness of column spacer and liquid crystal display device having thereof |
US20170199411A1 (en) * | 2016-01-11 | 2017-07-13 | Samsung Display Co., Ltd. | Display device and manufacturing method the same |
US20180329286A1 (en) * | 2016-01-27 | 2018-11-15 | Lg Chem, Ltd. | Film mask, method for manufacturing same, and method for forming pattern using film mask |
Non-Patent Citations (3)
Title |
---|
International Search Report for PCT/KR2018/014542 dated Feb. 26, 2019; 2 pages. |
Machine translation of JP 2005-250179 (Sep. 2005). * |
Machine translation of Kondo et al. (1983). * |
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JP7248213B2 (en) | 2023-03-29 |
TWI754116B (en) | 2022-02-01 |
CN111344635A (en) | 2020-06-26 |
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